<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <style>
      * {
        margin: 0px;
        padding: 0;
      }
      .big {
        height: 300px;
        width: 300px;
        border-radius: 50%;
        background-color: transparent;
        display: flex;
        flex-direction: column;
        justify-content: space-between;
        align-items: center;
        position: absolute;
        top: 0;
        left: 0;
        border: 1px solid;
      }
      .box_white {
        height: 300px;
        width: 150px;
        border-radius: 0 150px 150px 0;
        background-color: white;
        position: absolute;
        top: 0;
        left: 150px;
        position: relative;
      }
      .box_black {
        height: 300px;
        width: 150px;
        border-radius: 150px 0 0 150px;
        background-color: black;
        position: absolute;
        top: 0;
        left: 0;
        border: 1px solid;
      }
      .black {
        background-color: black;
        height: 55px;
        width: 55px;
        border-radius: 50%;
        /* margin-bottom: 40px; */
      }
      .white {
        background-color: white;
        height: 55px;
        width: 55px;
        border-radius: 50%;
        /* margin-top: 40px; */
      }
      .big_black {
        height: 150px;
        width: 150px;
        background-color: black;
        border-radius: 50%;
        display: flex;
        justify-content: center;
        align-items: center;
        /* position: absolute; */
      }
      .big_white {
        height: 150px;
        width: 150px;
        background-color: white;
        border-radius: 50%;
        display: flex;
        justify-content: center;
        align-items: center;
        /* position: fixed; */
      }
    </style>
  </head>
  <body>
    <div class="box_white"></div>
    <div class="box_black"></div>
    <div class="big">
      <div class="big_black">
        <div class="white"></div>
      </div>
      <div class="big_white">
        <div class="black"></div>
      </div>
    </div>
  </body>
</html>
